Unmasking Entra ID Threats: A CrowdStrike Researcher’s Early Career Insights with Sapir Federovsky

By /

Listen to this Post

Featured Imagehttps://www.youtube.com/watch?v=dYfb_S3S

You Should Know:

Essential Entra ID Security Commands

1. Check Entra ID Sign-In Logs

Get-AzureADAuditSignInLogs -Filter "createdDateTime gt 2025-05-01" -Top 100

2. Export Suspicious Logins

Get-AzureADAuditSignInLogs -Filter "status/errorCode eq 50126" | Export-CSV "InvalidLogins.csv"

3. Monitor Conditional Access Policies

Get-AzureADMSConditionalAccessPolicy | Select-Object DisplayName, State
  1. Linux Equivalent for Entra ID Logs (via API) 
    curl -s -H "Authorization: Bearer $token" "https://graph.microsoft.com/v1.0/auditLogs/signIns" | jq '.value[] | {user: .userPrincipalName, ip: .ipAddress}'

5. Detect Brute Force Attempts

SigninLogs
| where ResultType == "50126"
| summarize Attempts=count() by IPAddress
| sort by Attempts desc

Windows Security Hardening

 Disable NTLM authentication
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa" -Name "LmCompatibilityLevel" -Value 5

Enable PowerShell logging
Set-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" -Name "EnableScriptBlockLogging" -Value 1

Linux Security Audit

 Check failed SSH attempts
sudo grep "Failed password" /var/log/auth.log | awk '{print $11}' | sort | uniq -c

Monitor sudo commands
sudo auditctl -a always,exit -F arch=b64 -S execve -F path=/usr/bin/sudo -k SUDO_COMMANDS

API Threat Hunting

import requests

headers = {"Authorization": "Bearer YOUR_TOKEN"}
response = requests.get(
"https://graph.microsoft.com/v1.0/identityProtection/riskDetections",
headers=headers
)
print(response.json())

What Undercode Say

Entra ID (formerly Azure AD) is a prime target for attackers. Key takeaways from CrowdStrike’s research:

1. Credential Stuffing Prevention

 Enable MFA for all users
Set-MsolUser -UserPrincipalName [email protected] -StrongAuthenticationRequirements @{
"State"="Enabled"
}

2. Token Theft Mitigation

 Monitor OAuth tokens on Linux
journalctl -u azuread-token-validator --since "1 hour ago" | grep "Invalid token"

3. Windows Defender for Identity

Get-MPThreatDetection | Where-Object {$_.Domain -eq "ENTRA"} | Format-Table -AutoSize

4. Linux Sysmon Equivalent

sudo ausearch -k entra_id_threats -ts today | aureport -f -i

5. Automated Response Playbook

 Auto-quarantine compromised accounts
from azure.identity import DefaultAzureCredential
from azure.graphrbac import GraphRbacManagementClient

credential = DefaultAzureCredential()
client = GraphRbacManagementClient(credential, "TENANT_ID")
client.users.update("COMPROMISED_USER_OBJECT_ID", account_enabled=False)

Expected Output:

[/bash]
1. Entra ID sign-in logs filtered by error code 50126

2. CSV export of suspicious login attempts

3. Real-time sudo command monitoring on Linux

4. PowerShell script block logging enabled

5. Automated Python script for account quarantine

[bash]

Prediction
Increased AI-driven identity attacks targeting Entra ID will force adoption of quantum-resistant authentication by 2026. Researchers like Sapir Federovsky will pioneer behavioral biometrics integration to counter next-gen threats.

IT/Security Reporter URL:

Reported By: Merill Unmasking – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

Join Our Cyber World:

💬 Whatsapp | 💬 Telegram

Related Posts: